193116381 has 8 divisors (see below), whose sum is σ = 261852960. Its totient is φ = 126562032.

The previous prime is 193116359. The next prime is 193116389. The reversal of 193116381 is 183611391.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 193116381 - 2¹³ = 193108189 is a prime.

It is a super-2 number, since 2×193116381² = 74587873221074322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193116389) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 545350 + ... + 545703.

It is an arithmetic number, because the mean of its divisors is an integer number (32731620).

Almost surely, 2^193116381 is an apocalyptic number.

It is an amenable number.

193116381 is a deficient number, since it is larger than the sum of its proper divisors (68736579).

193116381 is a wasteful number, since it uses less digits than its factorization.

193116381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091115.

The product of its digits is 3888, while the sum is 33.

The square root of 193116381 is about 13896.6320020356. The cubic root of 193116381 is about 578.0157930017.

The spelling of 193116381 in words is "one hundred ninety-three million, one hundred sixteen thousand, three hundred eighty-one".